Originally Posted by
davetravels
Unless I'm missing something, I'm not sure why there would be a need for Clear post-customs in Concourse E or F, as, there's no ID/boarding pass check before re-clearing security to get into the terminal.
I believe the poster was asking if you acted like an Atlanta bound passenger, left the security area, went upstairs and checked in again. People do that in Detroit, and it can be a good strategy, but as it has been covered in this thread, it's probably not a good strategy for Atlanta.